Hi ving, how many batteries does it take? Total to 6V? If it is similar to my EQ3 drive then I bought
a little gizzmo from Jaycar that converts 12 or 24V to 1.5, 3, 4.5, 6, 7.5, 9, and 12V. Plugs straight into a 12 jump starter pack. Very handy.
Or there is
this one but I've not tried it.